y2+3y-5=o
y2+3y=5
y2+3y+2=7
y(y+1)(y+2)(y+3)=(y2+3y+2)(y2+3y)=7*5=35
y2+3y-5=o y2+3y=5 y2+3y+2=7 y(y+1)(y+2)(
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y2+3y-5=o
y2+3y=5
y2+3y+2=7
y(y+1)(y+2)(y+3)=(y2+3y+2)(y2+3y)=7*5=35